Shoe upper



FIG. 1 is a left side elevational view of a shoe upper showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front perspective view thereof; and

FIG. 5 is a rear perspective view thereof.

The broken line showing of has been is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a shoe upper, as shown and described. 